Timothy Wood

An addon to Gravity Forms to add an option to force your forms to be loaded SSL only. Fully supporting the latest version of Gravity Forms 1.9!
This plugin requires Gravity Forms 1.7+ and is tested through WordPress 4.1.
Thanks to the following users for making the plugin better! 
* @limecanvas
Additional Details:
<ul>
<li>This plugin is actively supported and we will do our best to help you.</li>
<li>This plugin has been tested on PHP 5.2.17, 5.3.14, 5.4.4 and WP 3.4, 4.0, and 4.1.</li>
<li>Background patterns used in the WordPress.org banner were created by http://subtlepatterns.com</li>
</ul>

Gravity Forms: Force SSL

An addon to Gravity Forms to add an option to force your forms to be loaded SSL only.

Forces all logged in users to stay on SSL connection. Guests are still served http. 
Just install and activate – all done!
<ul>
<li>NOTE: The ‘force_ssl_admin’ and ‘force_ssl_login’ directives in ‘wp-config.php’ are not needed while using this plugin.</li>
</ul>
<h3>Features</h3>
<ul>
<li>SSL Login</li>
<li>SSL enforced for entire logged-in session</li>
<li>SSL for Admin and front-end of site</li>
<li>No messing with ‘wp-config.php’ or ‘htaccess’ directives</li>
<li>Easy to use, just install and activate on any SSL equipped site – no configuration required</li>
<li>WordPress 3.5 compatible</li>
<li>Network/Multisite compatible – can be activated on any sites in the Network, individually – sites should have a valid SSL certificate</li>
<li>Buddypress compatible</li>
<li>WP-Super-Cache compatible</li>
<li>S2Member compatible</li>
<li>Bulletproof Security compatible</li>
<li>The ‘force_ssl_admin’ and ‘force_ssl_login’ directives in ‘wp-config.php’ are not needed while using this plugin.</li>
</ul>

SSL for Logged In Users

Forces all logged in users to stay on SSL connection

Gravity Forms: Force SSL vs SSL for Logged In Users